Durvillaea antarctica
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Durvillaea antarctica, also known as bull kelp, cochayuyo and rimurapa, is a large, robust species of southern bull kelp found on the coasts of Chile, southern Peru, New Zealand, and Macquarie Island.
Cross-section revealing the honeycomb structure of blades
Another cross-section
The long, narrow and dark blades of D. antarctica
Durvillaea poha
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Durvillaea poha is a large, robust species of southern bull kelp found in New Zealand. Common in the waters of the South Island, the species can be recognised due to its broader, flatter blades.
D. poha at Pūrākanui Bay, Otago
D. poha growing on Taieri Island, Otago
Stipes of D. poha at Second Bay, Otago